1. Department of Resources & Safety Engineering, China University of Mining & Technology, Xueyuan Road, Ding 11, Haidian District, Beijing 100083, People’s Republic of China (Corresponding author), e-mail: tswcl@126.com, https://orcid.org/0000-0003-4935-4945
2. Department of Resources & Safety Engineering, China University of Mining & Technology Xueyuan Road, Ding 11, Haidian District, Beijing 100083, People’s Republic of China
3. School of Civil and Environmental Engineering, Nanyang Technological University, B1k N1, 50 Nanyang Avenue, Singapore 639798, Republic of Singapore